Senior Java Developer

Role Overview

The Senior Java Developer is responsible for designing, implementing, and optimizing backend components of high-performance trading systems. The role combines technical expertise, accountability, and a strong client-oriented mindset to deliver reliable and scalable products that empower banks, brokers, and funds. Working autonomously and collaboratively, the Senior Java Developer ensures product quality, compliance with deadlines, and client success through excellence, efficiency, and innovation.

Summary of Key Responsibilities

• Design, develop, and maintain Java-based backend services and UIs for trading systems.
• Deliver high-availability, and scalable software solutions.
• Promote product quality, efficiency, and accountability throughout the development lifecycle.
• Collaborate across teams (Business Analysis, Quality Assurance, DevOps, Product Management) to ensure customer success.
• Mentor junior Developers and contribute to the company’s culture of autonomy, responsibility, and continuous learning.
• Provide regular updates and report activities to management.

Detailed Responsibilities

• Software Design & Development

• Design, develop, implement, test, and maintain efficient and reliable backend components and UIs using Java (Spring, Spring Boot, JPA/Hibernate, REST APIs).
• Ensure the scalability, reliability, and efficiency of trading software under high-performance conditions.
• Apply best practices for code quality, testing, and performance optimization.
• Participate actively in architectural discussions to align technology with business goals.
• Contribute to maintaining product quality and consistency across releases.

• Quality, Accountability, Efficiency, and Compliance

• Deliver production-ready code within agreed timelines and quality standards.
• Design, implement and execute automated unit tests to conduct unit, integration, and performance testing to guarantee product quality and stability.
• Proactively identify and resolve bottlenecks and defects.
• Take ownership and accountability for deliverables, ensuring compliance with internal procedures, client requirements, and regulatory standards.
• Write, edit, and maintain technical documentation for trading software, and ensure that all documents are accurate, consistent, and aligned with the latest product versions and releases.
• Review and update existing documentation to maintain quality, relevance, and compliance with standards.
• Deliver tasks within agreed deadlines, maintaining high standards of efficiency and professionalism.
• Maintain strict confidentiality of source code, client information, and proprietary data.
• Provide regular updates and report activities to management.

• Collaboration and Client Success

• Work closely with Business Analysts to translate functional requirements into effective technical solutions while prototyping solutions when required.
• Support the Quality Assurance and DevOps teams to ensure smooth deployment and reliable product performance in production.
• Contribute to customer satisfaction by providing robust, maintainable, and scalable systems that meet client expectations.
• Act as a proactive partner in achieving client success and long-term relationships.

• Leadership, Mentorship, and Continuous Improvement

• Mentor and guide junior Developers, promoting autonomy, accountability, and technical excellence.
• Encourage knowledge sharing, code reviews, and team collaboration.
• Stay current with technological advancements in Java and trading technology.
• Stay updated on financial markets, trading workflows, and new technologies relevant to trading systems.
• Contribute to process improvement initiatives and the evolution of best practices across the development lifecycle.
• Proactively identify opportunities to enhance system performance and scalability.

Profile & Qualifications

• BSC in Computer Science, Engineering or relevant field.
• Minimum 5 years of experience in Java backend development, preferably in trading or financial software.
• Proven expertise in Java, Spring, Spring Boot, JPA/Hibernate, REST APIs.
• Excellent programming skills, with the ability to produce technical document in a simple and meaningful way.
• Deep knowledge of development best practices (Agile methodology and Atlassian suite, i.e. Bitbucket, Jira, and Confluence) and industry standard libraries (stdlib).
• Strong expertise in multi-threaded, high-performance, and network programming (TCP sockets).
• Solid understanding of Linux environments, cloud deployment, Version Control Systems and CI/CD tools (e.g. Git, Jenkins). Full autonomy in using debugging and profiling tools.
• Knowledge of messaging systems (Kafka, RabbitMQ) and databases (SQL, NoSQL).
• Familiarity with containerization and orchestration tools (e.g. Docker, Kubernetes).
• Familiarity with serialization frameworks.
• Strong analytical, problem-solving, and organizational skills.
• High level of accountability, autonomy, and efficiency.
• Fluency in English and Italian (both written and spoken).

Commitment to product quality, confidentiality, and continuous learning.

Euronext Values

Unity

•        We respect and value the people we work with

•        We are unified through a common purpose

•        We embrace diversity and strive for inclusion

Integrity

•        We value transparency, communicate honestly and share information openly

•        We act with integrity in everything we do

•        We don’t hide our mistakes, and we learn from them

Agility

•        We act with a sense of urgency and decisiveness

•        We are adaptable, responsive and embrace change

•        We take smart risks

Energy

•        We are positively driven to make a difference and challenge the status quo

•        We focus on and encourage personal leadership

•        We motivate each other with our ambition

Accountability

•           We deliver maximum value to our customers and stakeholders

•           We take ownership and are accountable for the outcome

•           We reward and celebrate performance

We are proud to be an equal opportunity employer. We do not discriminate against individuals on the basis of race, gender, age, citizenship, religion, sexual orientation, gender identity or expression, disability, or any other legally protected factor. We value the unique talents of all our people, who come from diverse backgrounds with different personal experiences and points of view and we are committed to providing an environment of mutual respect.

This job description is only describing the main activities within a certain role and is not exhaustive. It does not prevent to add more tasks, projects.